In June, HyEnD had the honor to present a paper at the 2nd International Conference on Flight Vehicles, Aerothermodynamics and Re-entry Missions & Engineering (FAR 2022) in Heilbronn. The paper discusses the overall design and key technologies of our demonstrator rocket Compass. Insights in the design of the oxidizer tank, hybrid engine, pyrotechnical valves, recovery system and avionics are given. The paper is now available on ResearchGate.